Hi!
Nugget has sometimes done this towards the end of a wall and I assumed overtired. However it's becoming more of a problem and she's caught my hand a couple of times plus she appears so aggressive whilst doing it!
I've tried:
standing still and saying LEAVE. Waiting til she's left it for a while and then good girl and a treat.
Totally standing still and ignoring her.
Swapping for a tug toy.
Literally every walk I do these things but if anything it's worsened and it's the same whether on regular lead or retractable one!
Can anyone relate. She's 4 months old this week and we've been walking for about a month.